Patents by Inventor Jaekwan Hwang

Jaekwan Hwang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dietary fiber and oligosaccharides from ginseng and process for preparation thereof
    Patent number: 6899902
    Abstract: The present invention relates to dietary fibers and oligosaccharides from Ginseng and process for preparation thereof, more particularly, to a method of preparing the dietary fiber from Ginseng by extruding and centrifuging byproducts from Ginseng extract, in the meantime, preparing the oligosaccharides from Ginseng by treating byproducts from Ginseng extract with polysaccharides hydrolytic enzymes and the subsequent ultrafiltration. Thus it provides prominent effects in producing physiologically active materials such as the dietary fibers and oligosaccharides from the said byproducts in an environment-friendly manner.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: May 31, 2005
    Assignee: Yonsei University
    Inventor: Jaekwan Hwang
  • Physiologically active materials from cereals and process for preparation thereof
    Patent number: 6558930
    Abstract: The present invention relates to physiologically active materials separated from the cereals and manufacturing method thereof. Physiologically active materials such as ferulic acid and arabinoxylan present in cereal brans were separated by the extrusion process and the subsequent treatment with plant cell wall hydrolyzing enzymes. This combined process of extrusion and enzyme treatments for cereal brans, compared to the individual treatment, significantly increased the separation efficiency of physiologically active materials in cereal brans, ferulic acid and arabinoxylan, which inherently exist as insoluble materials in the cell wall of cereal bran.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: May 6, 2003
    Inventors: Jaekwan Hwang, Bosun Park, Jungmi Yun
  • Physiologically active materials from cereals and process for preparation thereof
    Publication number: 20020037331
    Abstract: The present invention relates to physiologically active materials separated from the cereals and manufacturing method thereof. Physiologically active materials such as ferulic acid and arabinoxylan present in cereal brans were separated by the extrusion process and the subsequent treatment with plant cell wall hydrolyzing enzymes. This combined process of extrusion and enzyme treatments for cereal brans, compared to the individual treatment, significantly increased the separation efficiency of physiologically active materials in cereal brans, ferulic acid and arabinoxylan, which inherently exist as insoluble materials in the cell wall of cereal bran.
    Type: Application
    Filed: June 8, 2001
    Publication date: March 28, 2002
    Inventors: Jaekwan Hwang, Bosun Park, Jungmi Yun